Geodesic
One case of extended boundary value problem of the membrane theory of convex shells by I.\,N.~Vekua
Problemy analiza, Tome 7 (2018) no. 3, pp. 153-162.

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In this paper we obtain results related to the membrane theory of convex shells with piecewise smooth boundary of its median surface. Within this theory we study the problem of realisation of the momentless tense state of equilibrium of the thin elastic shell, the median surface of which is a part of an ovaloid of the strictly positive Gaussian curvature. Development of this theory is based on the usage of generalized analytic functions and is needed for the extended statement of the basic boundary problem. We provide such a further development for a shell with a simply connected median surface using the Riemann–Gilbert special boundary condition. In the paper we identify surface classes for which the index of the corresponding discontinuous boundary condition is efficiently calculated and find sufficent boundary conditions for quasi-correctness of the basic boundary problem in the geometric form.
Keywords: convex shell, Riemann–Hilbert boundary value problem, index of the boundary value condition. 
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E. V. Tyurikov. One case of extended boundary value problem of the membrane theory of convex shells by I.\,N.~Vekua. Problemy analiza, Tome 7 (2018) no. 3, pp. 153-162. http://geodesic.mathdoc.fr/item/PA_2018_7_3_a12/

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